Monarch seems to have pulled the plug at the beginning of a month, which is a bit unusual - normally it is just before monthly payroll at the end of a month, so you are instantly a month's pay down (in my case payroll on 30th, messaged 10pm on 28th to be in the office first thing on 29th to be given marching orders and a box to clear your desk into). Not sure when Monarch's payroll was, but staff may have been slightly lucky on that.
I did wonder that and forgot to ask friends who work at MON, if they did get paid, they were very lucky (or less unlucky) than most in such circumstances.